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Philanthropic efforts typically create positive press for celebrities and famous athletes. But Holger Rune's has gotten him into hot water with his racquet sponsor, Babolat.

The Dane, who exited Wimbledon in a five-set first round loss to Nicolas Jarry, launched his personal shop two weeks ago, selling personal memorabilia for charity. The initial inventory included everything from autographed match-worn Nike kits to tournament water bottles and towels, as well as five of Rune's Pure Aero 98 Babolat racquets—two of which were smashed.

Read more: Holger Rune's official store features signed smashed racquets on sale for $7,000

“Holger Rune’s smashed racquets are ultra-rare collector’s items, used in official matches and only available in very limited numbers. Why? Because Holger rarely lets frustration take over. But when he does, the moment–and the racquet–tells a story," read the website at the time.

The problem? While Babolat, which is celebrating its 150th anniversary as a brand, is one of Rune's longest-tenured sponsors (he has played with its racquets since his junior days), the brand is not in the business of endorsing the abuse of its products.

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Speaking to the tennis website CLAY and RG Media at Wimbledon, Marion Cornu, Tennis Business Leader at Babolat said: “It is not our intention to promote broken racquets. We are in talks with his agent. ... We must be consistent with our values, so we are working on this issue with his representatives."

CLAY reported that one of the racquets was sold, with the proceeds donated to charity, before the listings were removed by the team that Rune retains to run the shop.

“Distracting Holger was never the intention," the team said in a statement.

Rune doesn't seem to be overly bothered by the ordeal, as the 22-year-old announced a new drop to the shop on Sunday. They include an autographed tennis ball from this year's Championships at the All England Club.

What is ailing Rune, however, is a right knee problem that he said curbed his SW19 effort.

He lost to Nicolas Jarry from two sets up in his aformentioned opener a week ago, where he was visited by the trainer and got a tape job in the fourth set.

Read more: Holger Rune on Wimbledon loss to Nicolas Jarry: 'If I play normal, I'm beating him nine out of ten times'

"Not a happy ending for me on the grass this year. Will have my knee checked and keep you updated," the world No. 8 wrote on social media a day later.